Seems to be OK now. I enabled and disabled it twice, and it opens just fine now.
The values written in the profile for the min and max match what's on the spindle setup page.
I missed this yesterday, and neglected to tell you that I never entered any values in the plugin Config window, since I don't have my RS485 converter yet.The plugin writes min and max RPM to pro file on closing...I set the HYPLUGIN SetUp window to not allow these fields to be left empty and only allow 0-9 digits.
But it looks like you've fixed it.
Hopefully my converter shows up early so I can test it out.